(CNN) – Jere Van Dyk has been inside the mind of the Taliban fighter. Why he wasn't killed and why he was set free are both still a mystery. Van Dyk is an American reporter who went deep into the lawless and dangerous tribal region between Afghanistan and Pakistan, and ended up a prisoner. He was forced to convert to Islam and learn the language since he couldn't trust his translator. His book about the experience, "Captive: My Time as a Prisoner of the Taliban," is out today. He joined us on Tuesday's American Morning to discuss his 45 days of captivity. Watch 